Name the examples of chelating agents and explain the chelating reaction which helps to improve the specific food process.


Answer :
  1. citric acid
  2. lactic acid
  3. tartaric acid

  • certain trace metals such as iron,nickel,copper promote oxidation reaction via catalytic action and produce undesirable reactions such as discoloration, rancidity,and instability of nutrients.
  • citrates and phosphates are able to form ring structures with meta ions (chelation). formation prevents metal ions from reacting with other materials or acting as catalyst for reaction.
  • citric acids- strongest chelating agent. Lactic, malic, tartaric acids - provides useful degree of chelation.
  • chelating function - retards enzymic browning of fruits and vege.
  • used synergist for antioxidants in prevention of fats and oils, and in food containing fatty compounds.Inactivate certain enzyme which contribute to fat rancidity.